HELP QUICK PLEASE!! How many solutions exist for the given equation?

1/2(x+12)=4x-1 (1/2 is a fraction, one half)

A. zero

B. one

C. two

D. infinitely many

Abag of popcorn contains 483 calories and servers 3.5 people. how many calories are in each serving.

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?